Etymology of Drum, Disk, Cylinder

You wonder, why's it called “drum”? How illogical the usage. Should use “disk” or “cylinder”!

Etymology of drum. Turns out, it came from similarity of shape to drum (music instrument), first used in 1740.

drum (n.)

1540s, probably from Middle Dutch tromme “drum,” common Germanic (compare German Trommel, Danish tromme, Swedish trumma), probably of imitative origin. Not common before 1570s. Slightly older, and more common at first, was drumslade, apparently from Dutch or Low German trommelslag.